Studying redistribution of bending moment for damaged deam under dead load |
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| Authors: | WANG Ying YIN Zhu-hua ZHAO Ren-da |
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| Institution: | 1. School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China;
2. Petrochina Centralchina Gas Pipeline Transportation Company, Wuhan 430072, China |
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| Abstract: | The conception of equivalent stiffness is used to simulate structural damage severity. Using this approach, an analytical model, which includes three damage parameters（damage location, damage severity, and the length of damage）, is developed for fixed-fixed beam. Solutions for the bending moment along the fixed-fixed beam under dead load, for both the undamaged state and damaged state, are obtained by solving the equations which are deduced from the theories of plane bending and approximately differential equation of flexural. The change rules of bending moment for damaged fixed-fixed beam are summarized from comparing the numerical values. The purpose of this paper is to lay groundwork for future research about structural health monitoring and damage identification. |
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| Keywords: | dead load damage beam bending moment redistribution |
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